Channeling knife



w. s. SHAFT 1,752,113

CHANNELING- KNIFE March 25, 1930.

Filed Jan. 25, 1927 Patented Mar. 25, 1930 UNITED STATES PATENT OFFICEWILLIS S. SHAFT, OF FARIBAULT, MINNESOTA, ASSIGNOR TO SHAFT-PIERCE SHOE.1

. COMPANY, OF FARIBAULT, MINNESOTA CHANNELING KNIFE Application filedJanuary 25, 1927. Serial No. 163,491.

This invention appertains to channeling machines and more particularlyto an improved knife for operating in conjunction with such machines.

One of the salient features of the present invention is the provision ofa knife for use in conjunction with a shoe channeling machine forforming a combination inner and outer sole and for channeling theperiphery of the sole stock between the inner and outer soles.

Another object of the invention is the provision of a shoe channelingknife for operating in conjunction with certain portions of ashoechanneling machine for beveling the extension of the outer sole of thecombination inner and outer sole.

A further object of the invention is the provision of novel means on theknife for simultaneously beveling the extension of the outer sole,beveling the periphery of the inner sole and for forming a channelbetween the inner and outer soles.

A'still further object of the invention is to provide a single knifeoperating in conjunction with a shoe channeling machine for channelingthe stock and beveling the edges of the stock.

With these and other objects in view, the invention consists in thenovel construction,

' arrangement and formation of parts, as will be hereinafter morespecifically described, claimed, and illustrated in the accompanyingdrawings, in which drawings:

Figure 1 is a top plan view of the improved knife, 7

Figure 2 is an edge elevation of the same,

Figure 3 is a fragmentary longitudinal section of the same taken on theline 3-3 of Figure 1 looking in the direction of the arrows,

Figure 4 is a transverse section of the knife taken on the line 4:--4=of Figure 2 looking in the direction of the arrows, and showing theauxiliary cutting blade,

Figure 5 is an end elevation of the knife,

Figure 6 is a rear end elevation of the knife,

Figure 7 is an edge elevation of the knife showing the opposite sidethereof from Figure 2, and

Figure 8 is a perspective view of the entire knife.

Referring to the drawings in detail, wherein similar referencecharacters designate corresponding parts throughout the several viewsthe letter A generally indicates the improved knife, which comprises ashank 10 which is adapted to be connected with a knife block, (notshown) of a conventional shoe channeling machine. Extending forwardlyfrom the shank 10 is a main blade 11. This blade is gradually taperedfrom one longitudinal edge toward the opposite edge to provide alongitudinally extending cutting face 12. The extreme outer end of theblade 11 which is remote from the shank 10 is likewise provided with acutting edge 13 and this edge is gradually beveled as at 14 toward thenon-' sharpened longitudinal edge of the blade.

The main blade 11 has associated therewith an auxiliary cutting blade 15which extends transversely of the blade from one longitudinal edgethereof to the other. This blade 15 is arranged slightly inward of thecutting edge 13 and has the edge adjacent to the cutting surface 12provided with a cutting face or edge 16. It is to be noted that theauxiliary blade 15 extends at an angle to the blade 11 at a substantialforty five degree incline although this can be changed if desired. Theauxiliary blade 15 also gradually increases in width toward the edge 16to conform to the seen that I have provided a novel knife which willchannel the periphery of a combination inner and outer sole andsimultaneously with the formation of the channel bevel the edge of theinner sole.

Changes in details may be made without V claim but departing'from thespirit or the scope of the What I claim as new is: A shoe channelingknife comprising a shank, a blade extending forwardly from the shankprovided with a longitudinal cutting edge; and a transversely extendingcutting end, and an auxiliary blade formed onthe upper face of the bladeand extending trans- "-versely"there0f adjacent to but spaced from thetransversely extending cutting end, one end of the auxiliary bladebeing. provided with a cutting edge adjacent to the longitudinal cuttingedge, the auxiliary blade extending at an angle to the vertical andinclining away from the transversely extending cutting end, and saidtransverse cutting end bening-beveled toward the longitudinalcuttingedge of the blade.

. In testimony whereof I aflix my signature.

WILLIS S. SHAFT.

